Joseph collins and john knox



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' Letters Patent No. 76,400, dated April 7, 1868.

IMPROVEMENT IN STOVES.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, JOSEPH COLLINS, and JOHN KNOX, of Conshohocken, in the county of Montgomery, and Stato of Pennsylvania., have invented a. new and improved Stove; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilledin the art to make and use the same, reference being had to the accompanying drawings forming part of this specification. v

This invention relates to a new and improved method of'constructing stoves, whereby they are rendered suitable not only for cooking but for heating purposes; and the invention consists in an arrangement for heating air combined with the fire-box, and in the single grate-bars used, and in the general construction and arrangement of parts, as will be hereinafter more fully described. l

Figure 1 represents a vertical section of the stove through the line n: :r of iig. 2, showing the general arrangenient or plan of the stove.

Figure 2 is a front view ofthe saine.

Figure 3 is a perspective View of one of the grate-bars detached.

Similar letters of reference indicate corresponding parts.

rlhe main novelty in this stove is the air-chamber and the arrangement for heating air for warming pur"- poses, and the protection of the plates, which are exposed to the more intense heat of the fire. In other respects the stove resembles the cooking-stove known as'the elevated oven stove.

A is tlie're-box, B is the oven, C is an air-chamber; D represents the fire-back, which supports the rear end of the grate-bars. E represents the grate-bars'. F represents the side plates of the fire-box, which, as seen in the drawings, are perforated with tubular openings a, through which the air passes into the air-chamber. The fire-back D also has tubular openings b in it, by which air passes from under the stove to its upper portion, and is discharged through orifices seen at c c.` The cold air thus introduced into this plate prevents it from being injured by the intense heat ofthe fire. G represents the hot-air pipe.

Itwill be seen that a-portion of the heated air may pass 'up through the iireiluefin the pipe li. The smoke and products of combustion pass from the tire-box into the iluef, as indicated hy the arrows, and from thence into the discharge-pipe J to the chimney. The grate is formed of separate bars. The rear ends are supported by the Jdre-back, as before stated. The grate-bar forms an elbow. The end of the vertical portion is supported by the front transverse bar I, into which it is dove-tailed, as seenY in iig. 2, or otherwise properly secured. 'lhe passageot' heated air (as well as of the products of combnstion,) is properly controlled by dempers `in the fines,- and for cooking and baking purposes the stove is provided with the usual and necessary apertures and doors.

Having thus described our invention, we claim as new, and desire to secure by Letters Patent- The stove constructed as described, and consisting of the air-chamber C, {ire-back D, having spaces 11,'

tubular sides F, grate composed of single hars E, bar I, ovenBand ues f Gr h, all arranged as described.

The above specification of our invention signed by us, this day of 1867.

JOSEPH COLLINS,

JOHN KNOX.

Witnesses WM. I-IAYwoon, .TonN OBRIEN. 

